# Basis21 vs Blackjack Trainer

The clearest difference is update cadence: Basis21 at every 2 days against Blackjack Trainer's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Basis21 sells 1 one-off in-app purchase and Blackjack Trainer sells 4 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Basis21 ships an update every 2 days, Blackjack Trainer every 2 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Basis21 | Blackjack Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/blackjack-trainer-strategy/id6789853035/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 55 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [VINCENT WAH KIT WONG](https://appshunter.io/developer/6782601296) | [Appana Ventures LLC](https://appshunter.io/developer/6822964993) |

## What reviewers say

### Basis21

[App page](https://appshunter.io/ios/app/basis21-blackjack-trainer/id6787679130)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $19.99 | one-time |


### Blackjack Trainer

[App page](https://appshunter.io/ios/app/blackjack-trainer-strategy/id6789853035)

Master blackjack strategy with this trainer. Learn optimal plays for any table rules, practice card counting, and improve your decision-making through interactive drills and instant feedback. Track your progress and build consistent habits for better gameplay.

**Highlights:** Adaptive basic strategy charts, Hi-Lo card counting drills, Instant feedback and explanations, Progress tracking and mastery heatmap, Offline practice mode, Daily habit building features

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Yearly | $9.99 | per year |
| Pro Yearly | $19.99 | per year |
| Pro Lifetime | $29.99 | one-time |
| Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Basis21 free?

Basis21 is free to download, with in-app purchases available.

### Is Blackjack Trainer free?

Blackjack Trainer is free to download, with in-app purchases available.

### Do Basis21 or Blackjack Trainer have ads?

Neither Basis21 nor Blackjack Trainer shows ads.

### Which is updated more often, Basis21 or Blackjack Trainer?

Basis21 ships an update every 2 days, and Blackjack Trainer every 2 weeks. Most recently, Basis21 was updated on November 5, 2026 and Blackjack Trainer on November 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*